Aizawl, Apr 24 : With no fresh case of swine flu being detected in Mizoram in the last few weeks, H1N1 virus has now been contained although people entering into the state were being screened as a precaution, a senior health official said.

Of the 30 samples sent to Kolkata's National Institute of Cholera and Enteric Diseases (NICED) in February, four were tested positive and all of them recovered completely a fortnight ago after being treated in the state, Integrated Disease Surveillance Programme (IDSP) nodal officer Dr Pachuau Lalmalsawma told news agency PTI.

However, as a precautionary measure screening of passengers arriving from outside the state was being conducted at the lone Lengpui airport near Aizawl and at Mizoram-Assam border town of Vairengte for people entering the state through NH-54, he said. The surveillance might be relaxed after this month unless fresh cases or threats are detected in the state, he said.